Yes, a PVC, or Premature Ventricular Contraction, is a type of arrhythmia. Arrhythmias are irregular heart rhythms, and PVCs specifically occur when an electrical impulse starts in the ventricles rather than the atria, causing early contractions of the heart muscle. Though PVCs can be felt as skipped beats or palpitations, they are usually benign and often occur in people without heart disease. However, frequent PVCs or those occurring in certain patterns may require monitoring or treatment, especially in individuals with underlying heart conditions, as they can sometimes lead to more serious arrhythmias or reduction in heart function.

Yes, acetone can remove epoxy, but its effectiveness depends on the epoxy's age and degree of cure. Acetone works as a solvent to dissolve uncured or partially cured epoxy, making it easier to remove. However, for fully cured epoxy, acetone may only soften it, requiring further mechanical means, such as scraping, for complete removal. Safety precautions are necessary when using acetone due to its flammability and potential health risks. It's recommended to test on a small area first and use in well-ventilated spaces or with appropriate PPE (Personal Protective Equipment).

Purple dye tends to fade over time due to exposure to light, particularly UV light, and the washing process. As it fades, purple dye often turns to a lighter shade of purple or may shift towards a bluish or pinkish hue, depending on the dye's original composition and the material it's applied to. Synthetic dyes might fade more uniformly, while natural dyes could fade unevenly or change color more dramatically depending on their botanical source. To minimize fading, it's recommended to limit exposure to direct sunlight and use gentle, color-safe detergents during washing.